<script type="text/babel">
import {
  computed,
  getCurrentInstance,
  nextTick,
  onMounted,
  reactive,
  ref,
  toRefs,
  watch,
} from 'vue';

import { reqCheck, reqGet } from '../api/index';
/**
 * VerifySlide
 * @description 滑块
 */
import { aesEncrypt } from './../utils/ase';
import { resetSize } from './../utils/util';
//  "captchaType":"blockPuzzle",
export default {
  name: 'VerifySlide',
  props: {
    captchaType: {
      type: String,
    },
    type: {
      type: String,
      default: '1',
    },
    // 弹出式pop，固定fixed
    mode: {
      type: String,
      default: 'fixed',
    },
    vSpace: {
      type: Number,
      default: 5,
    },
    explain: {
      type: String,
      default: '向右滑动完成验证',
    },
    imgSize: {
      type: Object,
      default() {
        return {
          width: '310px',
          height: '155px',
        };
      },
    },
    blockSize: {
      type: Object,
      default() {
        return {
          width: '50px',
          height: '50px',
        };
      },
    },
    barSize: {
      type: Object,
      default() {
        return {
          width: '310px',
          height: '40px',
        };
      },
    },
  },
  setup(props, context) {
    const {
      mode,
      captchaType,
      vSpace,
      imgSize,
      barSize,
      type,
      blockSize,
      explain,
    } = toRefs(props);
    const { proxy } = getCurrentInstance();
    const backImgBase = ref(''); // 验证码背景图片
    const backToken = ref(''); // 后端返回的唯一token值
    const blockBackImgBase = ref(''); // 验证滑块的背景图片
    const endMovetime = ref(''); // 移动结束的时间
    const finishText = ref('');
    const iconClass = ref('icon-right');
    const iconColor = ref(undefined);
    const isEnd = ref(false); // 是够验证完成
    const left = ref(0);
    const leftBarBorderColor = ref('#ddd');
    const leftBarWidth = ref(undefined);
    // 移动中样式
    const moveBlockBackgroundColor = ref(undefined);
    const moveBlockLeft = ref(undefined);
    const passFlag = ref(''); // 是否通过的标识
    const secretKey = ref(''); // 后端返回的ase加密秘钥
    const setSize = reactive({
      imgHeight: 0,
      imgWidth: 0,
      barHeight: 0,
      barWidth: 0,
    });
    const showRefresh = ref(true);
    const startLeft = ref(0);
    const startMoveTime = ref(''); // 移动开始的时间
    const status = ref(false); // 鼠标状态
    const text = ref('');
    const tipsBackColor = ref(''); // 提示词的背景颜色
    const tipWords = ref('');
    const top = ref(0);
    const transitionLeft = ref('');
    const transitionWidth = ref('');

    const barArea = computed(() => {
      return proxy.$el.querySelector('.verify-bar-area');
    });
    function init() {
      text.value = explain.value;
      getPictrue();
      nextTick(() => {
        const { imgHeight, imgWidth, barHeight, barWidth } = resetSize(proxy);
        setSize.imgHeight = imgHeight;
        setSize.imgWidth = imgWidth;
        setSize.barHeight = barHeight;
        setSize.barWidth = barWidth;
        proxy.$parent.$emit('ready', proxy);
      });

      window.removeEventListener('touchmove', (e) => {
        move(e);
      });
      window.removeEventListener('mousemove', (e) => {
        move(e);
      });

      // 鼠标松开
      window.removeEventListener('touchend', () => {
        end();
      });
      window.removeEventListener('mouseup', () => {
        end();
      });

      window.addEventListener('touchmove', (e) => {
        move(e);
      });
      window.addEventListener('mousemove', (e) => {
        move(e);
      });

      // 鼠标松开
      window.addEventListener('touchend', () => {
        end();
      });
      window.addEventListener('mouseup', () => {
        end();
      });
    }
    watch(type, () => {
      init();
    });
    onMounted(() => {
      // 禁止拖拽
      init();
      proxy.$el.addEventListener('selectstart', () => {
        return false;
      });
    });
    // 鼠标按下
    function start(e) {
      e = e || window.event;
      if (e.touches) {
        // 兼容移动端
        var x = e.touches[0].pageX;
      } else {
        // 兼容PC端
        var x = e.clientX;
      }
      console.log(barArea);
      startLeft.value = Math.floor(
        x - barArea.value.getBoundingClientRect().left,
      );
      startMoveTime.value = Date.now(); // 开始滑动的时间
      if (isEnd.value == false) {
        text.value = '';
        moveBlockBackgroundColor.value = '#337ab7';
        leftBarBorderColor.value = '#337AB7';
        iconColor.value = '#fff';
        e.stopPropagation();
        status.value = true;
      }
    }
    // 鼠标移动
    function move(e) {
      e = e || window.event;
      if (status.value && isEnd.value == false) {
        if (e.touches) {
          // 兼容移动端
          var x = e.touches[0].pageX;
        } else {
          // 兼容PC端
          var x = e.clientX;
        }
        const bar_area_left = barArea.value.getBoundingClientRect().left;
        let move_block_left = x - bar_area_left; // 小方块相对于父元素的left值
        if (
          move_block_left >=
          barArea.value.offsetWidth -
            Number.parseInt(Number.parseInt(blockSize.value.width) / 2) -
            2
        ) {
          move_block_left =
            barArea.value.offsetWidth -
            Number.parseInt(Number.parseInt(blockSize.value.width) / 2) -
            2;
        }
        if (move_block_left <= 0) {
          move_block_left = Number.parseInt(
            Number.parseInt(blockSize.value.width) / 2,
          );
        }
        // 拖动后小方块的left值
        moveBlockLeft.value = `${move_block_left - startLeft.value}px`;
        leftBarWidth.value = `${move_block_left - startLeft.value}px`;
      }
    }

    // 鼠标松开
    function end() {
      endMovetime.value = Date.now();
      // 判断是否重合
      if (status.value && isEnd.value == false) {
        let moveLeftDistance = Number.parseInt(
          (moveBlockLeft.value || '').replace('px', ''),
        );
        moveLeftDistance =
          (moveLeftDistance * 310) / Number.parseInt(setSize.imgWidth);
        const data = {
          captchaType: captchaType.value,
          pointJson: secretKey.value
            ? aesEncrypt(
                JSON.stringify({ x: moveLeftDistance, y: 5 }),
                secretKey.value,
              )
            : JSON.stringify({ x: moveLeftDistance, y: 5 }),
          token: backToken.value,
        };
        reqCheck(data).then((response) => {
          const res = response;
          if (res.repCode === '0000') {
            moveBlockBackgroundColor.value = '#5cb85c';
            leftBarBorderColor.value = '#5cb85c';
            iconColor.value = '#fff';
            iconClass.value = 'icon-check';
            showRefresh.value = false;
            isEnd.value = true;
            if (mode.value === 'pop') {
              setTimeout(() => {
                proxy.$parent.clickShow = false;
                refresh();
              }, 1500);
            }
            passFlag.value = true;
            tipWords.value = `${((endMovetime.value - startMoveTime.value) / 1000).toFixed(2)}s验证成功`;
            const captchaVerification = secretKey.value
              ? aesEncrypt(
                  `${backToken.value}---${JSON.stringify({
                    x: moveLeftDistance,
                    y: 5,
                  })}`,
                  secretKey.value,
                )
              : `${backToken.value}---${JSON.stringify({
                  x: moveLeftDistance,
                  y: 5,
                })}`;
            setTimeout(() => {
              tipWords.value = '';
              proxy.$parent.closeBox();
              proxy.$parent.$emit('success', { captchaVerification });
            }, 1000);
          } else {
            moveBlockBackgroundColor.value = '#d9534f';
            leftBarBorderColor.value = '#d9534f';
            iconColor.value = '#fff';
            iconClass.value = 'icon-close';
            passFlag.value = false;
            setTimeout(() => {
              refresh();
            }, 1000);
            proxy.$parent.$emit('error', proxy);
            tipWords.value = '验证失败';
            setTimeout(() => {
              tipWords.value = '';
            }, 1000);
          }
        });
        status.value = false;
      }
    }

    const refresh = () => {
      showRefresh.value = true;
      finishText.value = '';

      transitionLeft.value = 'left .3s';
      moveBlockLeft.value = 0;

      leftBarWidth.value = undefined;
      transitionWidth.value = 'width .3s';

      leftBarBorderColor.value = '#ddd';
      moveBlockBackgroundColor.value = '#fff';
      iconColor.value = '#000';
      iconClass.value = 'icon-right';
      isEnd.value = false;

      getPictrue();
      setTimeout(() => {
        transitionWidth.value = '';
        transitionLeft.value = '';
        text.value = explain.value;
      }, 300);
    };

    // 请求背景图片和验证图片
    function getPictrue() {
      const data = {
        captchaType: captchaType.value,
      };
      reqGet(data).then((response) => {
        const res = response;

        if (res.repCode === '0000') {
          backImgBase.value = res.repData.originalImageBase64;
          blockBackImgBase.value = res.repData.jigsawImageBase64;
          backToken.value = res.repData.token;
          secretKey.value = res.repData.secretKey;
        } else {
          tipWords.value = res.repMsg;
        }
      });
    }
    return {
      secretKey, // 后端返回的ase加密秘钥
      passFlag, // 是否通过的标识
      backImgBase, // 验证码背景图片
      blockBackImgBase, // 验证滑块的背景图片
      backToken, // 后端返回的唯一token值
      startMoveTime, // 移动开始的时间
      endMovetime, // 移动结束的时间
      tipsBackColor, // 提示词的背景颜色
      tipWords,
      text,
      finishText,
      setSize,
      top,
      left,
      moveBlockLeft,
      leftBarWidth,
      // 移动中样式
      moveBlockBackgroundColor,
      leftBarBorderColor,
      iconColor,
      iconClass,
      status, // 鼠标状态
      isEnd, // 是够验证完成
      showRefresh,
      transitionLeft,
      transitionWidth,
      barArea,
      refresh,
      start,
    };
  },
};
</script>
<template>
  <div style="position: relative">
    <div
      v-if="type === '2'"
      class="verify-img-out"
      :style="{ height: `${parseInt(setSize.imgHeight) + vSpace}px` }"
    >
      <div
        class="verify-img-panel"
        :style="{ width: setSize.imgWidth, height: setSize.imgHeight }"
      >
        <img
          :src="`data:image/png;base64,${backImgBase}`"
          alt=""
          style="display: block; width: 100%; height: 100%"
        />
        <div class="verify-refresh" @click="refresh" v-show="showRefresh">
          <i class="iconfont icon-refresh"></i>
        </div>
        <transition name="tips">
          <span
            class="verify-tips"
            v-if="tipWords"
            :class="passFlag ? 'suc-bg' : 'err-bg'"
            >{{ tipWords }}</span
          >
        </transition>
      </div>
    </div>
    <!-- 公共部分 -->
    <div
      class="verify-bar-area"
      :style="{
        width: setSize.imgWidth,
        height: barSize.height,
        'line-height': barSize.height,
      }"
    >
      <span class="verify-msg" v-text="text"></span>
      <div
        class="verify-left-bar"
        :style="{
          width: leftBarWidth !== undefined ? leftBarWidth : barSize.height,
          height: barSize.height,
          'border-color': leftBarBorderColor,
          transaction: transitionWidth,
        }"
      >
        <span class="verify-msg" v-text="finishText"></span>
        <div
          class="verify-move-block"
          @touchstart="start"
          @mousedown="start"
          :style="{
            width: barSize.height,
            height: barSize.height,
            'background-color': moveBlockBackgroundColor,
            left: moveBlockLeft,
            transition: transitionLeft,
          }"
        >
          <i
            class="verify-icon iconfont"
            :class="[iconClass]"
            :style="{ color: iconColor }"
          ></i>
          <div
            v-if="type === '2'"
            class="verify-sub-block"
            :style="{
              width: `${Math.floor((parseInt(setSize.imgWidth) * 47) / 310)}px`,
              height: setSize.imgHeight,
              top: `-${parseInt(setSize.imgHeight) + vSpace}px`,
              'background-size': `${setSize.imgWidth} ${setSize.imgHeight}`,
            }"
          >
            <img
              :src="`data:image/png;base64,${blockBackImgBase}`"
              alt=""
              style="
                display: block;
                width: 100%;
                height: 100%;
                -webkit-user-drag: none;
              "
            />
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
